require File.expand_path('../../../spec_helper', __FILE__)

ruby_version_is "1.9" do
  describe "Random#bytes" do
    it "returns a String" do
      Random.new.bytes(1).should be_an_instance_of(String)
    end

    it "returns a String of the length given as argument" do
      Random.new.bytes(15).length.should == 15
    end

    it "returns an ASCII-8BIT String" do
      Random.new.bytes(15).encoding.should == Encoding::ASCII_8BIT
    end

    it "returns the same output for a given seed" do
      Random.new(33).bytes(2).should == Random.new(33).bytes(2)
    end

    # Should double check this is official spec
    it "returns the same numeric output for a given seed accross all implementations and platforms" do
      rnd = Random.new(33)
      rnd.bytes(2).should == "\x14\\"
      rnd.bytes(1000) # skip some
      rnd.bytes(2).should == "\xA1p"
    end

    it "returns the same numeric output for a given huge seed accross all implementations and platforms" do
      rnd = Random.new(bignum_value ** 4)
      rnd.bytes(2).should == "_\x91"
      rnd.bytes(1000) # skip some
      rnd.bytes(2).should == "\x17\x12"
    end

    it "returns a random binary String" do
      Random.new.bytes(12).should_not == Random.new.bytes(12)
    end
  end
end
